8con theta cos theta cos2 theta cos4 theta=

8sin theta cos theta cos2 theta cos4 theta=sin x rArr x=

8sin theta cos theta cos2 theta cos4 theta=sin x the x=

8sin theta cos theta*cos2 theta cos4 theta=sin x rArr x=

Prove the following: 2^(3)sin theta cos theta cos2 theta cos4 theta=sin8 theta

8 sin theta cos theta cos 2 theta cos 4 theta =

If theta=(pi)/(9), prove that cos theta cos2 theta cos3 theta cos4 theta=(1)/(16)

If 8sin theta cos theta cos2theta cos4theta=sinx then x=

cos4 theta=cos2 theta

4cos6 theta cos4 theta cos2 theta=

Prove the following : cos 7 theta + cos 5 theta + cos 3 theta +cos theta =4 cos theta cos2 theta cos4 theta for all value of theta .